Where does “punakhmer” come from?

punakhmer (Finnish) comes from English Khmer, from Irish -is, from Old Irish -as, from Proto-Celtic -assus, from Proto-Indo-European -ad-tus.

Ancestry of “punakhmer”, step by step

punakhmer traces back through two separate lines of ancestry.

via English Khmer

StepLanguageWordMeaning
1EnglishKhmerThe national language of Cambodia, part of the...
2Irish-is-ish, -ese; inflection of -eas: ##...
3Old Irish-asNominal suffix, used to form abstract ideas or...
4Proto-Celtic-assus
5Proto-Indo-European-ad-tus

via Finnish puna

StepLanguageWordMeaning
1FinnishpunaThe color red
2Proto-Finnicpunared
3Proto-Finno-Ugricpunacolor, hair
Every word from Proto-Indo-European -ad-tus